to keep a promise or commitment even when it is difficult
約束や誓約を守る、たとえそれが難しくても (yakusoku ya seiyaku o mamoru, tatoe sore ga muzukashikute mo)
"He’s the kind of person who always stands by his word."
"彼はいつも自分の言葉に立っているタイプの人です。" (Kare wa itsumo jibun no kotoba ni tatte iru taipu no hito desu)
to make yourself feel excited or motivated about something
to use your past success or experience to improve or achieve...
to talk a lot or complain repeatedly about something
to mix naturally with people or surroundings
to continue something into the next stage or period
to make steady progress toward a higher position or goal